A tool-holder including: a first rail and a second rail that are parallel and each of which includes first fixing elements configured for fixing said rail to the surface, a driving slide including first guiding elements configured to slide over the first rail, a drive system configured to move the driving slide along the first rail and a first fixing system, a driven slide including second guiding elements configured to provide a sliding connection with the second rail and a second fixing system, an assembly bar carrying a first complementary fixing system cooperating with the first fixing system to form a removable fixing between them, a second complementary fixing system intended to cooperate with the second fixing system to form a removable fixing between them, and a carriage having a first assembly system, and a movement system on which the carriage is fixed and that is configured to move said carriage along the assembly bar, and a support module including second fixing elements for fixing the tool and a second assembly system intended to cooperate with the first assembly system to form a removable fixing between them.